Padlock



(No Mode-1.)

H. ROLAND. PADLOGK.

No. 587,609. Patented Aug. 3,1897.

UNITED STATES PATENT OFFICE.

HENRY ROLAND, OF HAZLETON, PENNSYLVANIA.

PADLOCK.

, SPECIFICATION forming part of Letters Patent No. 587,609, dated August3, 1897.

Application filed January 27, 1897. Serial No. 620,893. (No model.)

Be it known that I, HENRY ROLAND, a citizen of the United States, and aresident of Hazleton, in the county of Luzerne and State ofPennsylvania, have invented certain new and useful Improvements inPadlocks; and I do hereby declare that the following is a full, clear,and exact description of the invention, which will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, which form a part ot` thisspecification.

My invention relates to improvements in padlocks which comprise acylindrical rim and two heads secured thereto, forming a case in whichthe working parts are located, said rim and heads being formed with aslot to receive a hasp or other device, having a hole in the end throughwhich passes a segmental bolt operated by a key.

The object ot' the invention is 'to provide a lock of the abovecharacter which shall be very strong and secure, enabling it towithstand any ordinary means employed for breaking the same, and whichcannot be picked by wires or forced open, so that it can only beoperated by the key made for the same.

The invention consists in the novel construction and combination ofparts hereinafter fully described and claimed.

In the accompanying drawings., Figure 1 is an elevation of a lockconstructed in accord-- ance with myinvention, one of the face-platesbeing removed to show the interior construction. Fig. 2 is a similarView showing the bolt shot or locked. Fig. 3 is an elevation similar toFig. 1, the tumbler and the dog pivoted thereto being removed. Fig. 4 isa similar view, the circular bolt being removed. Fig. 5 is a plan viewof the bolt removed from the case. Fig. 6 is a sectional View of thesame on the line a; :0, Fig. 5. Figs. 7 and 8 are sectional views of thecomplete lock.

In the said drawings the reference-nu m eral 1 designates the lock-case,comprising the cylindrical rim 2 and the circular face-plates or heads3, secured thereto by means of pins or rivets 4. These plates and rimsare cut away at 5, forming-a rectangular slot or openin g to receive ahasp, staple, or other device. Se-

cured to one of said heads or plates is a circular ring 7, forming a waybetween its periphery and the inside of the rim 2 to receive The numeral13 designates a circular bolt which is seated in the circular waybetween the rim 2 and ring 7 and is formed with an opening 14 to allow apassage for the hasp or staple.

The numeral 15 designates the end of the bolt which passes through thehasp or staple to lock the same. In rear of this end the bolt is formedwith a projection 16, formed with two slots 17 and 18, a similarprojection 19 being formed at the opposite side, but without the slots.

The bolt opposite the opening therein is formed with a web 20, having acurved recess 21 in its inner edge, with which the bit of the keyengages in locking and unlocking the bolt.

Pivoted to the stud or pivot-pin 11 is a curved tumbler 23., which restsupon the bolt and projects beyond the inner or recessed edge of the web20. Pivoted to this tumbler is a dog 24, having its free end reduced,forming a rectangular catch 25, which projects through a slot 26 in theweb ot` the ring secured to the lock-case. This dog is adapted to engagewith the slots 17 and 1S, respectively, when the bolt is shot andwithdrawn. The numeral 27 designates a flat spring, one end of whichengages with a slot in the tumbler while the other rests against the rim2.

The operation is as follows: To lock the lock, the hasp or staple isinserted in the slot or opening in the lock-case and the key inserted inthe keyhole of the lock and then turned as usual, and its end coming incontact with the curved tumbler will push the ICO same outward, which inturn will withdraw i across the opening` in the lock-caseand through thehasp or staple. At the same time the key-bit will leave or pass out ofcontact with the tumbler, when the spring will press it inward and forcethe end of the dogiinto the slot 18 and lock the bolt, so that it cannotbe retracted until the key is turned in the reverse direction and thetumbler and dog again operated.

The key may be of the ordinary padlock kind or it may be a flat key, andthe possible combinations are unlimited, so that no lock could be openedexcept by the true key made therefor. There are no tumblers to becomedislodged, as the tumbler while capable of being oscillated on its pivotis secured to the latter.

The lock may be constructed for use with folding and other doors,trunks, chests, &c. Having thus fully described my invention, what Iclaim is- In a padlock, the combination with the case comprising the rimand heads formed with au opening to receive a hasp or staple, the ringsecured to said case concentric with the rim and formed with a webprovided with a slot at one side and With recesses at the inner end andthe pivot or stud, of the circular holt located between said rim andring, having an opening for the passage of the hasp or

